Planookaph co



wn'mzssss' a Z10 INVENTOR C. F. BUENTE.

COLLAPSIBLE CORE FOR MOLDS. APPLICATION FILED 001'. 2. 1911.

Patented Aug. 5, 1919.

2 SHEETS-SHEET 1- THE cOLuMmA PLANOGRAPH c0.. WASHINGTON. D. c.

C. F. BUENTE. CQLLAPSIBLE CORE FOR MOLDS. APPLICATION FILED OCT. 2. 19H.

1 ,3 1 2, 1 57. Patented Aug. 5, 1919.

2 SHEETS-SHEET 2- WITNESSES INVENTOR WWW 1% $4 THE COLUMBIA PLANOCIRAPH60., WASHINGTON, n. C.

UNITED STATES PATENT omnon conmrsitrin c m os Mann s;

1,312,157. fiiicifilifiiif L e-earnest rate-med hag. 5; i919:

- t Wk ni u -nm ti m: i 1 1 Application filed October 2,1917. Serial No.192,389. I

c in n a to. instances Be it 'known that I, OI-IARLEs F ben Q I wIi my Zm 1 a citizen of the United States, re ding at R es r g on the pallet isa base plate 3,

Avalon, All e y. c us nlien ey rani ha e v n an ew and, n fl almpr ee me i P i 1e, e dr Ms l i which the following is a ifull, cleargaud exactdescription, re heinghad the accompanying drawings, fori'ni'ng part ofthis specification, in which; Figure 1 is avertical section through oneform of my improvecl corel a, a Fig. 2 is a horizonta1 section of aportion ofthe core shown in Fig. 1.' as t a Fig. 3 is atsimilar Viewshowing the key segments withdrawn, 1 a a t Fig. 4L is a. detailsectional view of a pore tion of the structure showingathe connectionsbetween one of the key segments," and the main segments, and i Fig. 5 isan edge view of a portion one of the main segments. l This inventionrelates to an improvement in collapsible core for molds, and more pantioularly relates to cores for concrete molds.

The object of myinyention islto provide core which. can readily. becollapsed and extended,- aild in which all ofithe parts are connected toeach other. A {further object of my inventionisto providea core in whichthe various members will automatically be collapsed when a singleoperating member is actuated; A furthergobjectbf my ,invention is toprovide a core in which the tops and the bottoms of the members can beadjusted relative to each other, in which all of the membersQ-will bemoved at an angle to the axis ofthe mold" and at an angle to the line atright anglesto the axis of the mold.

eferring to the accompafiyingdrawings, the reference character 2designates abas'e boardorpallet forsupport ing the core and moldedarticle the outer edges of which are arranged to be engaged by the outer'secti ons of the mold, which may be of any approved type, or the typeshown in my cO-pending The precise natiire cf my mea est will h is (cnect d avails br s e a nil d smel fufl s e hance ia nt: eesle..i;mn-Ilse c a ends of a h sta es eer dto espe inamem e i it'hat in a snide prect les i a the en th rwf 1n heic' n t l ti show t e e re eight;

teer the a radi l} arms a d ghte de ltei etiellsi whi h; te ms four esoot gu des 180? tram; ea h et r, for gu ding the. ey s i e a her ina tr de c ibeds The Ecor teelti s t ur a n me s and ennkey egmentsfi .iE chof t key egmen 3 a is ar anged 1 to Slide Q l wo.

uide nreiec iens 1. le rly nd c t i F g-v an c nnected wre h oft e; knsf se ese 13 are. l n s il 1 The l n 5 are conne ted. to t e a k y s stsl ear (the low r en thereof and are also nec ed to @Slide block;L 16,guidedjlbetween the angle bars 5t yEajch of thei;linksl 15 is connectedto ,a key seg'nicljlt 13 nean the upper end thereof and: aslide 3131061?117 above the slide block11'6. flhisusli'de block ,171 iSufilSO arrangetltoi beguicled hby the ahglebarsfi;

These slide. blocks 16 and a 171 are connected to cachother by meanslofaifrod" 18 which arranged toipermitjonetofi the blocks to be adjnstedrelative ito. the other to square up theislides of; the key segmentswith relae tion to thewpallt. .i Therod 18 is {provided withwa screwl9lwhich extends upithrough the i nutj; I? and; them-upper end lofathis: screw i 'sipi'ovided with aneye 20 which is arranged tobeieiigaged by. the hook of crane or. any suitable device 1 to. lift the.core' as hereinafter described; The riiairlisfcgments vfi are bro-2vided with two brackets 21 at; each vertical edgthereo fat qdointsadjacent to the ends ofthe'l'links. 14 ancl15. Thesebrackets areprdvided wi-tha recess having an inclined race 22lian'd stops 23and 24.25 are pins or inroj'ections which extend laterally from the keysegments 113 into the recesses in the brackets 21', and in this caseLhave shown these pins as continuations of the pivot plns for the'endsof the links l land 15, although separate projections may be formed onthe key segments. The brackets'21; and pins are so positioned that thepins normally move along the incline 22 which are at'the same angle asthe guide projections 11, the

stops 23; and 24 are arranged to beengaged g by the pins 25 to shift themain segments 12 when collapsing or placing thecore. Connected to thepallet is an annular centering member 26 whichalso forms the bottom forthe article to be molded, which in this case is a sewer pipe, and whichis arranged to center the segments which form the collapsible core. Theupper ends of adjacent main segments are connected'to eachother by adjustable rods 27"whicli freely pass through openings inbrackets'28"on*the segments 12 when the'co're is collapsed, but preventthe movement of these members, beyond a predetermined point when'thecore is extended. The operation ofthe device isas follows: If it isdesired to remove the formed article to a'position' other than that atwhich it is formed, the core, together with the. formed pipe, can bodilybe moved to anotherpoint by connecting the chain hook of a'crane to theeye 20. As the chainis raised by means ofthe crane, the'pipe will besupported on the palletwhich will, in turn be supported by the differentsegments of the collapsible core which have an undercut engagement withthe annular centering member 26. After the device hasbeen moved to thedesired'point, the hand wheel'8 is operated, which will elevate thescrew 19, and which will, in turn, move the slide blocks 16 and 17upwardly. This upward movement of the slide blocks 16 and 17 will firstmovethe key-segments 13 inwardly and upwardly. As soon as-the pins 25engage the stops-24, thefurther movement of the key segments 13 willdrawfthe main segments 12 inwardly away from the pipe. As soon as thecore has been collapsed sufliciently, it can beremovedfrom the pipe bymeans ofthe crane.

The core is then moved to another pallet, and the-base'plate 3'islowered thereon; As soon as the base plate is seated on the pal-- let,the handwheel 8 is moved-in the're-' Verse direction to extend the coreinto en-- gagement-..with' the centering member 26.

It will readily be" understood by those familiar with "the art that ifit is desired article by the actuating mechanism, and supported by theframe when withdrawn.

Also from the )rovision of core havim a plurality of mam segments and aplurality of key segments connected to each other in such a manner thatthe key segments will first be operated and which will, in turn, operatethe main segments. Another advantage results from the provision andmeans for moving the segments upwardly away from the pallet when thecore is collapsed, together with positive supporting and guiding meansfor the core segments on the frame.

I claim:

1. A collapsible core for a mold comprising'a' plurality of mainsegments, a plurality of key segments and means to move the key segmentstoward each other and then move the main segments toward each other,substantially as described.

2. A collapsible core for a mold comprising a supporting frame, aplurality of key segments, guides on said frame for the key segments, aplurality of main segments, means for moving the key segments relativeto each other, and connecting means between the key segments and themain segments for shifting the main segments after the key segments112]."6 been moved a predetermined distance, substantially as described.

"3. A collapsible core for a mold comprising a plurality of mainsegments, a plurality of key segments, means to move the key segmentstoward and from each other, guiding means for said key segments, andmeans for moving the main segments after the key segments have beenmoved a predetermined distance, substantially as described. 4} Acollapsible core for a mold comprissegments, means on' the frame forguiding the key segments, actuating mechanism for moving the keysegments relative to each other mounted on said frame, a plurality ofmain segments, and connections between the key segments and: the mainsegments for actuating the main segments after the key segments havebeen moved a predetermined distance, substantially as described.

5. A mold having a supporting frame, a

plurality of mold members arranged to move relative to each other, andmechanism for moving the mold members relative to each other, supportedon said frame, sub stantially as described.

6. A mold having a supporting frame, a plurality of mold membersarranged to move relative to each other, mechanism connected to theframe for moving the mold members relative to each other, and guidemembers on the frame and some of the mold members for supporting andguiding said mold members when moved away from their molding positions,substantially as described.

mga supporting frame, a plurality of key 7. A mold having a centralsupporting frame, two sets of mold members arranged to move relative toeach other, guiding supports on the frame for one set of said members,actuating connections for said members, and actuating and supportingmembers on the first set of members for moving the second sets ofmembers and supporting them during the movement thereof, substantiallyas described.

8. A mold having a base plate or sup port, a supporting frame mountedthereon, guide members on said supporting frame, a plurality of moldsections mounted on said guides and arranged to move thereon, actuatingmembers connected to the supporting frame and mold members, saidactuating members and guides being arranged to move the mold memberstoward each other and away from the base of the mold, other moldsections arranged to move to and from each other, and means for movingthe last mentioned mold sections, substantially as described.

9. A concrete mold comprising a pallet, a frame mounted thereon, guideson said frame, a plurality of mold sections mounted on said guides, saidguides being arranged to cause the mold sections When moved toward oraway from each other to be moved in an angle With relation to thepallet, actuating devices for the mold sections mounted on the frame,other mold sections between the first mentioned mold sections, and meanson the first mentioned mold sections for moving and supporting thesecond mold sections, substantially as described.

In testimony whereof, I have hereunto set my hand.

CHARLES F. BUENTE.

Gopies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, I). G.

